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  • Question

  • The continuity equation


  • Options
  • A. expresses the relationship between work and energy
  • B. relates the momentum per unit volume between two points on a stream line
  • C. relates mass rate of flow along a stream line
  • D. requires that Newton's second law of motion be satisfied at every point in fluid.

  • Correct Answer
  • relates mass rate of flow along a stream line 

    • Hydraulics problems

    Search Results

    • 1. The mouth piece shown in the below figure is generally known as

    • Options
    • A. Internal mouth piece
    • B. Re-entrant mouth piece
    • C. Borda's mouth piece
    • D. All the above.
      • Discuss
    • 2. Flow in pipes is laminar if Reynold number is

    • Options
    • A. less than 2100
    • B. more than 3000
    • C. between 2100 and 3000
    • D. none of these.
      • Discuss
    • 3. Total head of a liquid particle in motion is the sum of

    • Options
    • A. potential head and kinetic head
    • B. kinetic head and pressure head
    • C. potential head and pressure head
    • D. potential head, kinetic head and pressure head.
      • Discuss
    • 4. If jet of water coming out from a nozzle with a velocity 9.81 m/s, the angle of elevation being 30°, the time to reach the highest point is

    • Options
    • A. 0.25 s
    • B. 0.50 s
    • C. 1.0 s
    • D. 1.5 s.
      • Discuss
    • 5. If Re is the Renold's number, the coefficient of friction for laminar flow is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m3/sec, the velocity of approach Vd is

    • Options
    • A. 2gH
    • B.
    • C.
    • D.
    • E. none of these.
      • Discuss
    • 7. The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second required to close the valve, the head of pressure

    • Options
    • A.
    • B.
    • C.
    • D. none of these.
      • Discuss
    • 8. In fluids, steady flow occurs when

    • Options
    • A. conditions of flow change steadily with time
    • B. conditions of flow do not change with time at a point
    • C. conditions of flow remain the same at adjacent point
    • D. velocity vector remains constant at a point.
      • Discuss
    • 9. In a centrifugual pump casing, the flow of water leaving the impeller, is

    • Options
    • A. rectilinear flow
    • B. radial flow
    • C. free vortex motion
    • D. forced vertex.
      • Discuss
    • 10. For critical depth of flow of water in open channels, fc the specific energy must be :

    • Options
    • A. minimum
    • B. maximum
    • C. average of maximum and minimum
    • D. None of these.
      • Discuss

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